HomeNanotechnologyNew carbon nanotube-based foam guarantees superior safety in opposition to concussions

New carbon nanotube-based foam guarantees superior safety in opposition to concussions


New carbon nanotube-based foam promises superior protection against concussions
The brand new materials, created by College of Wisconsin–Madison engineers, has a novel structure that consists of quite a few micrometer-scale cylinder buildings, every made from many carbon nanotubes. These buildings give the fabric its extraordinary shock-absorbing properties. Credit score: Ramathasan Thevamaran/College of Wisconsin–Madison

Developed by College of Wisconsin–Madison engineers, a light-weight, ultra-shock-absorbing foam may vastly enhance helmets designed to guard individuals from sturdy blows.

The reveals 18 instances greater particular power absorption than the froth at the moment utilized in U.S. navy fight helmet liners, in addition to having a lot better energy and stiffness, which may permit it to offer improved affect safety.

Bodily forces from an affect can inflict trauma within the mind, inflicting a concussion. However helmet supplies which can be higher at absorbing and dissipating this earlier than it reaches the mind may assist mitigate, and even stop, concussions and different traumatic mind accidents.

The researchers’ {industry} companion, helmet producer Staff Wendy, is experimenting with the brand new materials in a helmet liner prototype to analyze its efficiency in real-world situations.

“This new materials holds great potential for power absorption and thus affect mitigation, which in flip ought to considerably decrease the chance of mind harm,” says Ramathasan Thevamaran, a UW–Madison professor of engineering physics who led the analysis.

The group detailed its advance in a examine revealed not too long ago within the journal Excessive Mechanics Letters.

New carbon nanotube-based foam promises superior protection against concussions
College of Wisconsin–Madison postdoctoral analysis affiliate Komal Chawla research the architected vertically aligned carbon nanotube foam within the lab. Credit score: College of Wisconsin–Madison/Joel Hallberg

The brand new materials is an architected, vertically aligned nanotube foam. To create it, the researchers began with carbon nanotubes—carbon cylinders only one atom thick in every layer—as the fundamental constructing blocks.

Carbon nanotubes have already got distinctive mechanical properties, and to additional improve their efficiency, the researchers designed a fabric with distinctive structural options throughout a number of size scales. The fabric’s novel structure consists of quite a few micrometer-scale buildings, every made from many carbon nanotubes.

Discovering the brand new foam’s final optimum design parameters—such because the thickness of the cylinders, their inside diameter and the hole between adjoining cylinders—was no small activity. The researchers systematically carried out experiments the place they assorted every parameter and studied all of the potential combos.

“So we took a couple of totally different thicknesses, after which examined that with each diameter dimension and each potential hole, and so forth,” Thevamaran says. “Altogether, we checked out 60 totally different combos and carried out three exams on every pattern, so 180 experiments went into this examine.”

They uncovered a transparent winner. Cylinders with a thickness of 10 micrometers or much less, organized shut to one another, produced a foam with the very best shock-absorbing properties.

“I anticipated the general properties to enhance resulting from our interactive structure, however I used to be stunned by how dramatically the properties had been enhanced when the cylinders had been 10 micrometers thick,” Thevamaran says. “It was resulting from an uncommon dimension impact that emerged within the process-structure-property relations. The impact was very pronounced, and it turned out to be fairly advantageous for the properties we had been concentrating on.”

As well as, the brand new materials can stay robustly shock-absorbing at each very excessive and really low temperatures due to its constructing blocks, making it helpful for functions in a variety of utmost environments.

The researchers, together with Komal Chawla, UW–Madison postdoctoral analysis affiliate, and graduate college students Abhishek Gupta and Abhijeet S. Bhardwaj, are patenting their innovation via the Wisconsin Alumni Analysis Basis. The university-industry collaboration was a part of the UW¬–Madison-led PANTHER program, an interdisciplinary analysis initiative that’s creating options to allow higher detection and prevention of traumatic mind accidents.

Extra info:
Komal Chawla et al, Superior mechanical properties by exploiting size-effects and multiscale interactions in hierarchically architected foams, Excessive Mechanics Letters (2022). DOI: 10.1016/j.eml.2022.101899

Quotation:
New carbon nanotube-based foam guarantees superior safety in opposition to concussions (2022, December 1)
retrieved 2 December 2022
from https://phys.org/information/2022-12-carbon-nanotube-based-foam-superior-concussions.html

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